9778236 has 48 divisors (see below), whose sum is σ = 25872000. Its totient is φ = 2849472.

The previous prime is 9778231. The next prime is 9778253. The reversal of 9778236 is 6328779.

9778236 = T₂₈₀ + T₂₈₁ + ... + T₄₃₁.

It is a super-2 number, since 2×9778236² = 191227798543392, which contains 22 as substring.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a d-powerful number, because it can be written as 9⁵ + 7³ + 7⁸ + 8⁷ + 2⁷ + 3¹¹ + 6⁸ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9778231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1315 + ... + 4613.

It is an arithmetic number, because the mean of its divisors is an integer number (539000).

Almost surely, 2^9778236 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9778236, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12936000).

9778236 is an abundant number, since it is smaller than the sum of its proper divisors (16093764).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9778236 is a wasteful number, since it uses less digits than its factorization.

9778236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3338 (or 3336 counting only the distinct ones).

The product of its digits is 127008, while the sum is 42.

The square root of 9778236 is about 3127.0171090034. The cubic root of 9778236 is about 213.8389623192.

The spelling of 9778236 in words is "nine million, seven hundred seventy-eight thousand, two hundred thirty-six".